| 摘要 |
PROBLEM TO BE SOLVED: To provide a built-in fish way structure which does not block a river weir and is excellent from the viewpoint of water conservation and sand prevention. SOLUTION: The built-in fish way structure which is built into or attached to a river crossing structure (ground sill structure 3), has an inclined fish way (channel block 1) in the form of a conduit on the side of a running water falling wall surface of the crossing structure, over a distance from a predetermined location to a upper predetermined location of the crossing structure. COPYRIGHT: (C)2004,JPO
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